The Hawker P.1127 Kestrel was an experimental aircraft that led to the development of the Hawker Siddeley Harrier the first operational vertical and/or short take-off and landing (V/STOL) jet fighter-bomber. In the 1950’s a number of companies developed designs for V/STOL aircraft to reduce the requirements for vulnerable runways, in the United kingdom Hawkers began the development of the P1127 in 1957 taking advantage of the development of the Bristol Siddeley Pegasus vectored-thrust…